I don’t have the issue; I run vanilla/pure OWRT 23.05’s PBR as a jump box behind a Slate AX as a WG gateway. I’m not inclined to trust ‘shim’ procs; not when there’s a chance of tunnel leakage. There’s a reason I don’t run without a kill switch on my gateway. YMMV.
Here, so you can fcvk around yet still unfcvk yourself :